1827 is when Oxford discovers the small particles
It's C.
All chemical reactions will always need activation energy.
<span>The amount of energy at each trophic level decreases as itmoves through an ecosystem. ... An energy pyramid is a model that shows the flow of energy from one trophic, or feeding, levelto the next in an ecosystem. The model is a diagram that compares the energy used by organisms at each trophic level.</span>
There can only be one because hes at the top of his food chain